public class ReplacementTester
{
   public static void main(String[] args)
   {
      String greeting = "Hello, elite hacker!";
      for(int i=0;i<greeting.length();i++)
      {
         char x=greeting.charAt(i);
         if(x=='e') x='3';
         if(x=='i') x='1';
         if(x=='l') x='7';
         if(x=='o') x='0';
         System.out.print(x);
      }
         System.out.println("\nExpected: H3770, 371t3 hack3r!");
   }
}